Patents by Inventor Lien-Wei Tsai

Lien-Wei Tsai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Nail pusher locating device for magazine assembly
    Patent number: 7549562
    Abstract: A nail pusher locating device for a magazine assembly has a nail pusher slidingly disposed in the magazine assembly; and a first elastic element between the magazine assembly and the nail pusher for driving the nail pusher to move toward a top end of the magazine assembly. The nail pusher has at least one bended-shaped guiding groove. The guiding groove has an entrance, an exit, and a capturing notch, opening to the top end, and a ridge protruding from an inner sidewall thereof, opposite to the capturing notch. The nail pusher further has a guiding flange slantwise extending to the entrance. The magazine assembly has a sway arm pivotally disposed at a tail end thereof, which has at least one guiding pole corresponding to the guiding flange. In addition, a second elastic element is provided between the tail end and the sway arm.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: June 23, 2009
    Assignees: De Poan Pneumatic Corp., Robert Bosch Tool Corporation
    Inventors: Yi-Tsung Wu, Lien-Wei Tsai, Chi-Sheng Huang, Marco Laubach
  • Nail Pusher Locating Device for Magazine Assembly
    Publication number: 20090072001
    Abstract: A nail pusher locating device for a magazine assembly has a nail pusher slidingly disposed in the magazine assembly; and a first elastic element between the magazine assembly and the nail pusher for driving the nail pusher to move toward a top end of the magazine assembly. The nail pusher has at least one bended-shaped guiding groove. The guiding groove has an entrance, an exit, and a capturing notch, opening to the top end, and a ridge protruding from an inner sidewall thereof, opposite to the capturing notch. The nail pusher further has a guiding flange slantwise extending to the entrance. The magazine assembly has a sway arm pivotally disposed at a tail end thereof, which has at least one guiding pole corresponding to the guiding flange. In addition, a second elastic element is provided between the tail end and the sway arm.
    Type: Application
    Filed: September 17, 2007
    Publication date: March 19, 2009
    Inventors: Yi-Tsung Wu, Lien-Wei Tsai, Chi-Sheng Huang